Answer: lowering the activation energy.
- A increasing the activation energy
- B lowering the activation energy
- C raising the reaction temperature
- D shifting the equilibrium position
Correct answer: B. lowering the activation energy
Explanation: A catalyst provides an alternative pathway with a lower activation energy, so more molecules can react.
A typical adsorption isotherm: x/m (mass adsorbed per gram of adsorbent) rises steeply at low pressure, then flattens into a saturation plateau as the adsorbent surface fills up.
Concept context
Explore the chemistry that happens at interfaces, from catalysts that speed up industrial reactions to colloids like milk, smoke, and gels that surround us every day.